I've found this listpost:
http://marc.info/?l=openbsd-misc&m=130951991404687&w=2

I will ask [email protected] if it is possible to put this feature on the
roadmap.


Regards,
Erwin

2015-05-08 9:28 GMT+02:00 Erwin Schliske <[email protected]>:

> Hello,
>
> I have one question regarding ipsec with NAT.
>
> With one customer I have to setup a site2site vpn. To avoid address
> conflicts I'd use NAT. Because multiple of our subnets have to use the
> tunnel, I have this config in ipsec.conf:
>
> ike esp from {192.168.10.0/24 (192.168.1.0/24),192.168.10.0/24 (
> 192.168.2.0/24),192.168.10.0/24 (192.168.3.0/24)} to 10.78.1.0/24 \
>  peer <dest gateway> \
>  local <my gateway> \
>  main auth hmac-sha2-256 enc aes-256 group modp1536 lifetime 28800 \
>  quick auth hmac-sha2-256 enc aes-256 group modp1536 lifetime 3600 \
>  psk XXXXXXXXXX
>
> In my pf.conf I have the NAT rules
>
> match out on $if_ipsec from 192.168.1.0/24 to 10.78.1.0/24 nat-to
> 192.168.10.1
> match out on $if_ipsec from 192.168.2.0/24 to 10.78.1.0/24 nat-to
> 192.168.10.2
> match out on $if_ipsec from 192.168.3.0/24 to 10.78.1.0/24 nat-to
> 192.168.10.3
>
> But when I test the tunnel, I see only packets for the subnet
> 192.168.3.0/24 enter the tunnel. The other subnets don't get a connection.
>
> Is this setup not possible or do I have an error in config?
>
>
> Thanks.
>
>
> Regards,
> Erwin

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